OpenWrt 22.03.4 service release

[badulesia]

The fix is applied to 21.02, 22.03 and master snapshots. Nevertheless no stable version has it, so 21.02.6 and 22.03.4 don't boot.
On another thread @daniel suggested that a newer stable version that includes the fix could be done.

MR8300 doesn't boot 22.03.4 (as expected)

Hi. As of 4/15/2023, the kernel issue has been solved for 21.02, 22.03 and master snapshots. Unfortunatly 21.02.6 and 22.03.4 stables won't boot. There won't be anymore release for the 21.02 branch. For the 22.03 branch, we should wait for a future stable 22.03.5. So don't install/upgrade to 22.03.4 in the meantime.